Up to 3 million more people could qualify for Medicaid in 2014 as a result of the anomaly. That’s because, in a major change from today, most of their Social Security benefits would no longer be counted as income for determining eligibility. It might be compared to allowing middle-class people to qualify for food stamps.Medicare chief actuary Richard Foster says the situation keeps him up at night.

“I don’t generally comment on the pros or cons of policy, but that just doesn’t make sense,” Foster said during a question-and-answer session at a recent professional society meeting.

“This is a situation that got no attention at all,” added Foster. “And even now, as I raise the issue with various policymakers, people are not rushing to say … we need to do something about this.”